Research on Coordinated Control of Active Front Wheel Steering and Direct Yaw Moment

• Peilin Shi
• Liang Zhang
• Jianwei Hou
• Minglei Liang
• Yushuai Zhao
• Liaodong Zheng

A coordinated control method of activefront steering ( AFS ) and direct yaw moment ( DYC ) control system is proposed. Firstly, the expected yaw rate and the expected centroid sideslip angle are solved, then the sliding mode control theory is used to establish the AFS and DYC control systems, The influence of longitudinal speed, front wheel angle and road adhesion coefficient on vehicle stability region is analyzed by β-β ̇ phase plane. The relationship between the boundary line of the stable region and the road adhesion coefficient is obtained by data fitting. According to the proposed AFS and DYC coordinated control strategy, the coordinated control area is divided, the boundary of coordination region is solved by fuzzy logic method. Finally, the allocation rules of coordination region are formulated. Based on the co-simulation model of Simulink and CarSim, the simulation of double lane change simulation of high and low adhesion coefficient pavement is carried out. The simulation results show that the proposed coordinated control strategy of AFS and DYC is effective, which can improve the operation stability of the vehicle while ensuring the comfort.

Select Volume / Issue:

• Volume 8,Issue 4,July 2021

Year:

2021

Type of Publication:

Article

Keywords:

Active Front Wheel Steering; Direct Yaw Moment Control; Coordinated Control; Phase Plane Method; Control Area

Journal:

IJASM

Volume:

8

Number:

4

Pages:

46-58

Month:

July

ISSN:

2394-2894